Seneca K109TC User manual

Brand: Seneca

Model: K109TC

Type: User manual

Seneca K109TC is a 4-point temperature-insulated converter for thermocouples that can convert a temperature signal into a voltage or current signal, making it suitable for various industrial applications. It features a compact size, easy DIN rail mounting, and convenient configuration options through DIP-switch settings. The device offers precise temperature measurement with different thermocouple types, including J, K, E, N, S, R, B, and T. Additionally, it provides a passive output that can be used for alarm or thermostat functions.

ENGLISH - 1/8MI00111 -E3

K109TC

TEMPERATURE-INSULATED CONVERTER FOR THERMOCOUPLES

The K109TC instrument is a 4-point galvanic insulator. It converts a temperature signal

read by a thermocouple into a signal normalised in voltage or current; besides it has a

passive output which commutates at the overcoming of a threshold set through a button on

the front.

The module's main features are its compact size (6.2 mm), attachment to a 35 mm DIN

rail, bus-connector power supply option, quick connection by spring terminals, and easy

configuration in the field by DIP-switch.

Technical Features

General Description

Power supply :

Consumption :

19,2..30 Vdc

max 24 mA at 24 Vdc

Input :

Tables :

Measurement Range :

Minimum span :

Impedance :

Test Current :

CMRR :

(1)

DMRR :

(1) (2)

Thermocouples types: J, K, E, N, S, R, B, T

EN60584-1 (ITS-90)

Depending on the thermocouple type (see Range and

Precision of the Input Table), on the dip-switches

selection (see section)Setting of the Dip-Switches

100 °C

10 MW

<50 nA

>135 dB, refered to power-supply side

>40 dB

(1) The values are valid at the set rejection frequency, with filter ON.

(2) For disturbance values such as the input signal peak does not exceed the limit of

acceptability.

Range and Precision of the Input

Admitted Range

Thermocouple

0,12 °C0,025 % + 0,29 °C

ResolutionMean Error

-210..1200 °C

-200..1372 °C

-200..1000 °C

-200..1300 °C

-50..1768 °C

-200..400 °C

250..1820 (*)°C

0,17 °C0,025 % + 0,4 °C

0,92 °C0,025 % + 0,2 °C

0,19 °C0,025 % + 0,42 °C

0,66 °C0,025 % + 1,34 °C

0,59 °C0,025 % + 1,19 °C

0,9 °C0,025 % + 1,87 °C

0,13 °C0,025 % + 0,31 °C

(*): Up to 250 °C, the output is considered equivalent to a null temperature.

MI00111 -E3 ENGLISH - 2/8

Insulation Voltage :

Protection Index :

Operating Conditions :

Storage Temperature :

Altitude :

LED Signalling :

Connections :

Conductor Section :

Wire stripping :

Standards :

Box :

Dimensions, Weight :

1,5 kV (50 Hz for 1 min)

IP20

Temperature -20..+65 °C

Humidity 10..90 % at 40 °C non-condensing.

-40..+85 °C

Up to 2000 slm

Fault/Anomaly, state of the auxiliary output

Spring terminals

0,2..2,5 mm2

8 mm

EN61000-6-4/2002 (electromagnetic emission, industrial surroundings)

EN61000-6-2/2005 (electromagnetic immunity, industrial surroundings)

EN61010-1/2001 (safety)

All the circuits must be provided with double insulation from the circuits

under dangerous voltage. The power supply transformer must be built to

compliance with EN60742: “Insulation transformers and Safety

transformers”.

Notes:

- Use with copper conductor.

- Use in Pollution Degree 2 Environment .

- Power Supply must be Class 2.

- When supplied by an Isolated Limited Voltage/Limited

Current power supply a fuse rated max 2.5Ashall be

installed in the field.

PBT (black colour)

6,2 x 93,1 x 102,5 mm, 46 g.

ADC :

Class/Base Prec. :

Thermal Drift :

Response Time : (10..90 %):

Cold junction error :

14 bits

0,1 %

120 ppm/K

< 25 ms (without filter)

< 55 ms (with repeat filter 50 Hz)

1,5 °C Max

0..5 Vdc, 1..5 Vdc, 0..10 Vdc e 10..0 Vdc

Minima load resistance 2 kΩ

0..20 mA, 4..20 mA, 20..0 mA e 20..4 mA

Maximum load resistance 500 Ω

approximately 12,5 V

approximately 25 mA

1 mV for voltage output, 2 A for current outputm

mA or 5 V out put: 350 ppm of the end scale

10 V output : 200 ppm of the end scale

Applicable Voltage : 24 Vac Nominal

Current: 60 mA Max

Voltage Output :

Current Output :

Maximum Voltage :

Maximum Current :

Resolution :

Error :

Static Aux Output :

MI00111 -E3 ENGLISH - 3/8

The auxiliary output has been designed in order to pilot an indicator, a relay of greater

power or the input of a supervisor control system. Through this output the K109 TC

instrument may generate an alarm or may be utilized like a thermostat. The stateNormal

of the output depends on the configuration for the fault of the primary output, so on the

setting of the correspondent dip-switch SW2.7 (see table).Details of Dip-Switch SW2.7

Since during the regulation of the threshold the primary output assumes the value of the

threshold, it is advisable to connect an instrument of measure (a multimeter for example)

to the primary output. Therefore the value in V or mA of the threshold depends on the

scale of the chosen output. The switching is instantaneous to the overcoming of the set

up value.

Description

AUXILIARY OUTPUT

The regulation of the threshold is performed through a button present under the frontal

cover and accessible through the hole by using a little screwdriver. The operation has to

be performed when the module is correctly supplied. It will be necessary to follow the next

procedure:

Pressed and released the button, the primary output starts to represent the value of

threshold. At this point the red led flashes slowly.

If within 5 seconds there is no pression, the system returns to the normal

functioning.

On the contrary at every further pressure, there is an increment or decrement of

approximately 0,2 %; the direction of the variation depends on the Normal state of the

output and therefore on the dip-switch SW2.7 so that the commutation occurs exactly

at the set value, leaving the effect of the hysteresis only at the reset.

If the button is not released but continues to be pressed, after 2 seconds a

continuous increment of 3% starts.

Reached the maximum/minimum value of the chosen scale, the cycle starts again.

During the regulation of the threshold, the auxiliary output follows the normal

functioning, opening and closing, as previously set.

After 5 seconds of button’s inactivity, the set value is memorized and the instrument

continues with the normal functioning.

Note:

The threshold may not be modified in case of internal fault. If the power supply is not

sufficient during the regulation or before the 5 seconds of button’s inactivity are elapsed,

the new value will not be memorized.

Setting of the threshold

Details of Dip-Switch SW2.7

Regulation Type

Furnace (*) Towards the high Closed (led ON) Decrement

Normal State Set Threshold

Refrigerator (*)

Towards the bottom Opened (led OFF) Increment

OFF

SW2.7

Fault

(*) In case of choice of direct output (0/4..20 mA), 0/1..5/10 V)

MI00111 -E3 ENGLISH - 4/8

Installation rules

This module has been designed for assembly on a DIN 46277 rail. Assembly in vertical

position is recommended in order to increase the module's ventilation, and no raceways or

other objects that compromise aeration must be positioned in the vicinity.

Do not position the module above equipment that generates heat; we recommend

positioning the module in the lower part of the control panel or container compartment.

We recommend rail-type assembly using the corresponding bus connector (Code K-BUS)

that eliminates the need to connect the power supply to each module.

K109TC

TC transmitter

with galvanic insulation

SW1 SW2

K109TC

TC transmitter

with galvanic insulation

SW1 SW2

1 -Attach the module in the upper part of

the rail.

2 - Press the module downwards.

1 -Apply leverage using a screwdriver (as

shown in the figure).

2 - Rotate the module upwards.

Inserting the module in the rail Removing the module from the rail

Using the K-BUS

1 - Compose the K-BUS connectors as required in order to obtain the number of positions

necessary (each K-BUS permits the insertion of no. 2 modules).

2 - Insert the K-BUS connectors in the rail by positioning them on the upper side of the rail

and then rotating them downwards.

sIMPORTANT: Pay particular attention to the po ition of the protrudent terminals of the

K-BUS. The K-bus must be inserted in the guide with the protrudent terminals on the left

(as shown in the figure) otherwise the modules are turned upside downs.

-Never connect the power supply directly to the bus connector on the DIN

rail.

-Never tap power supply from the bus connector either directly or by using

the module's terminals.

MI00111 -E3 ENGLISH - 5/8

It is understood that this configuration is valid only with all the DIP switches at position

0. If also one Dip is moved, it is necessary to set all the other parameter as indicated

on the following tables.

Thermocouple Type :

Line Rejection :

Input Filter :

Measurement Range :

Output Signal :

Output Signal in case of

fault :

Over-Range :

Auxiliary Output

Threshold :

50 Hz

Present

0...1000 °C

4..20 mA

Towards the top of the output range

YES: a 2.5% over-range value is acceptable;

a 5% over-range value is considered a malfunction.

0% of the nominal scale

MEASUREMENT RANGE START

6SW1 7 8

Note: for all following tables

The indication indicates that the DIP-switch is set in Position 1 (ON).

No indication is provided when the DIP-switch is set in Position 0 (OFF).

INPUT FILTER (*)

LINE REJECTION

SW1

Absent

50 Hz

Present

60 Hz

(*) The input filter stabilizes the measurement and guarantees the repeating of the

disturbance signal overlapping the measurement signal but slows down the response

time. If the maximum response speed is not required, it is advisable to insert it.

THERMOCOUPLE TYPE

1SW1 2 3

* If all the dip-switches are set to OFF position, the default configuration is valid;

otherwise the value of this parameter is 0 °C, as for the other thermocouple types.

J Type

Default *

K Type

0 °C 0 °C 0 °C 0 °C 0 °C 0 °C 0 °C

R Type S Type T Type B Type E Type N Type

0 °C

100 °C

200 °C

300 °C

500 °C

-100 °C

-200 °C

100 °C

200 °C

400 °C

600 °C

800 °C

-100 °C

-200 °C

100 °C

200 °C

300 °C

400 °C

600 °C

800 °C

1000 °C

100 °C

200 °C

300 °C

400 °C

600 °C

800 °C

1000 °C

50 °C

100 °C

200 °C

-50 °C

-150 °C

-100 °C

-200 °C

400 °C400 °C

500 °C

600 °C

800 °C

1000 °C

1200 °C

1400 °C

100 °C

200 °C

300 °C

400 °C

500 °C

-100 °C

-200 °C

100 °C100 °C

200 °C

300 °C

500 °C

700 °C

-100 °C

-200 °C

All the module DIP switches are at pos. 0 as default configuration. This set corresponds

to the following default configuration :

SETTING OF THE DIP-SWITCHES

Factory setting

MI00111 -E3 ENGLISH - 6/8

MEASUREMENT RANGE END

1SW2 2 3

(*) See the table below for the corresponding values.

Nominal Value Over-range ±2,5 % Over-range ±5 %

20 mA 20,5 mA 21 mA

4 mA 3,5 mA 3 mA

0 mA 0 mA 0 mA

10 Vdc 10,25 Vdc 10,5 Vdc

5 Vdc 5,125 Vdc 5,25 Vdc

1 Vdc 0,875 Vdc 0,75 Vdc

0 Vdc 0 Vdc 0 Vdc

OUTPUT SIGNAL IN CASE OF FAULT

7SW2

Towards the top of the output range

Towards the bottom of the output range

OVER-RANGE (*)

8SW2

YES: a 2.5% over-range value is acceptable; a 5%

over-range value is considered a malfunction.

NO: the malfunction alone causes a 2.5%

over-range value.

OUTPUT

4SW2 5 6

0..20 mA

20..0 mA

4..20 mA

20..4 mA

0..10 V

1..5 V

10..0 V

0..5 V

J Type

1200 °C

K Type

1350 °C 1750 °C 1750 °C 400 °C 1800 °C 1000 °C 1300 °C

R Type Type S T Type B Type E Type N Type

1000 °C

800 °C

600 °C

500 °C

400 °C

300 °C

200 °C

1200 °C

1000 °C

800 °C

700 °C

500 °C

300 °C

200 °C

1500 °C

1300 °C

1100 °C

900 °C

700 °C

500 °C

300 °C

1500 °C

1300 °C

1100 °C

900 °C

700 °C

500 °C

300 °C

350°C

300 °C

250 °C

200 °C

150 °C

100 °C

50 °C

1600 °C

1500 °C

1300 °C

1100 °C

900 °C

700 °C

500 °C

800 °C

600 °C

500 °C

400 °C

300 °C

200 °C

100°C

1200 °C

1000 °C

800 °C

600 °C

500 °C

400 °C

200 °C

Output Signal Limits

LED indications on the front

Red LED Meaning

Fast flashing Internal fault: power supply not sufficient, out of range

offset or reference . Error on reading or writing in flash

(at the start or on threshold setting)

Slow flashing DIP-switch setting error

Set Threshold in progress

Steady light Disconnected thermocouple, out of range input or

temperature compensation

Output limiting in progress

Output

Fault

YES

NO (*)

YES

(*): In this modality the output signal represents the value of the threshold.

MI00111 -E3 ENGLISH - 7/8

Electrical Connections

The module has been designed for spring-type terminal

electrical connections.

Proceed as follows to make the connections:

1 - Strip the cables by 0.8 mm

2 - Insert a screwdriver in the square hole and press it

until the cable lock spring opens.

3 - Insert the cable in the round hole.

4 - Remove the screwdriver and make sure that the cable

is tightly fastened in the terminal.

Power supply

There are various ways to provide the K

Series modules with power.

1 - Direct power supply to the modules by

connecting 24 Vdc power supply directly to

Terminals 7 ( + ) and 8 ( - ) of each module.

Yellow LED Meaning

ON The auxiliary output is closed

OFF The auxiliary output is opened

2 - Using the K-BUS connector accessory for the distribution of the power supply to the

modules via bus connector, in this way eliminating the need to connect power supply to

each module.

The bus can be supplied from any of the modules; the total absorption of the bus must be

less than 400 mA. Higher absorption values can damage the module. An appropriately

sized fuse must be connected in series to the power supply.

3 - Using the K-BUS connector accessory for the distribution of the power supply to the

modules via bus connector and the K-SUPPLY accessory for the connection of the power

supply. The K-SUPPLY accessory is a 6.2 mm wide module that contains a set of

protections designed to protect the modules connected via bus against over-voltage

loads.

The bus connector can be provided with power using the K-SUPPLY module if the total

absorption of the bus is less than 1.5 A. Higher absorption values can damage both the

module and the bus. An appropriately sized fuse must be connected in series to the power

supply.

8 mm

0,2..2,5 mm2

POWER

SUPPLY

19.2..30 Vdc

Set Threshold

Red Led

Yellow Led

Input

The module accepts input from the

following types of thermocouples: J, K, E,

N, S, R, B, T.

The use of shield cables is recommended

for the electronic connections.

Output

Voltage connection - Current connection

(applied current)

The use of shield cables is recommended

for the electronic connections.

Auxiliary Output

The auxiliary output has been designed to

pilot an indicator or a relay of greater power

or the input of a supervisor control system.

POWER

SUPPLY

OUTPUT

INPUT

V / I

POWER

SUPPLY

OUTPUT

INPUT +

POWER

SUPPLY

OUTPUT

INPUT

AUX

Disposal of Electrical & Electronic Equipment (Applicable throughout the European Union and other

European countries with separate collection programs)

This symbol, found on your product or on its packaging, indicates that this product should not be treated as

household waste when you wish to dispose of it. Instead, it should be handed over to an applicable

collection point for the recycling of electrical and electronic equipment. By ensuring this product is

disposed of correctly, you will help prevent potential negative consequences to the environment and

human health, which could otherwise be caused by inappropriate disposal of this product. The recycling of

materials will help to conserve natural resources. For more detailed information about the recycling of this

product, please contact your local city office, waste disposal service or thè retail store where you

purchased this product.

This document is property of SENECA srl. Duplication and reprodution are forbidden, if not authorized. Contents of the

present documentation refers to products and technologies described in it. All technical data contained in the document

may be modified without prior notice Content of this documentation is subject to periodical revision.

SENECA s.r.l.

Via Austria, 26 - 35127 - PADOVA - ITALY

Tel. +39.049.8705355 - 8705359 - Fax +39.049.8706287

e-mail: [email protected] - www.seneca.it

ENGLISH - 8/8

Seneca K109TC User manual

Seneca K109TC User manual

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